Question

Question #406ac

Answer 1

A 1x1 matrix, that consequently has only one element.

Explanation:

In a singleton matrix, there is only one element. That is, `A_(mxn)`, an m by n matrix, is a singleton matrix if and only if m = n = 1. Thus, any singleton matrix will take the form `[u]`, where u is any entry that might be put in a matrix; 3, -2, `x^2`, `sin x`, etc.